I've hacked the trigger system to create a really basic teleport pad,
using the dirt tile as an indicator. This behaviour is not coded into the
engine, but is in fact scripted in lua.
This commit is messy, due to lack of sleep.
RoomData now has monsterMgr and waypointMgr members, so that it can
compare it's characters to the monster & waypoints, etc.
RoomManager has been updated. It now has a database reference, which is
passed to the monsterMgr of new rooms. The room API also has functions
which expose these managers to lua.